August 4, 2017

PROBLEM OF THE WEEK - Civil: Water Res/Env NCEES Problem 510

Problem 510 is a PM Exam problem found in the NCEES PE Civil: Water Resources and Environmental Practice Exam — but don’t be afraid to try it if you are just taking the AM portion as it’s a great problem to practice open channel flow computations!

This problem involves a channel and overbank area which need to convey a given design flood. The unknown in this problem is the width of the overbank needed such that the depth in the channel does not exceed a certain value. There are two given Manning’s n values for the channel and overbank area.

HINT: Separate the main channel and overbank areas into two rectangular cross-sections, and be careful when you compute the wetted perimeter, including only the parts of the channel and overbank that are wetted.

Dr. Beth Sciaudone’s Solution to NCEES PE Civil: Water Resources/Env Problem 510


DTC recommends that anyone taking the PE Exam purchase the NCEES Practice Exam for the exam they are taking. It is an essential exam review resource. https://account.ncees.org/exam-prep/

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